MESON Chess Problem Database

Problem Display
PID: 17142 (1K6/8/4pQ2/1p1k2P1/1Pp2p2/5P2/3P4/8 w - - 0 1)

Mazel, Frantisek

Wiener Schachzeitung, 1903

1K6/8/4pQ2/1p1k2P1/1Pp2p2/5P2/3P4/8

#2

6 + 5

5454 Near Snap 2018
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qxe6#
  • Tries
    • 1.Kc7?
      • 1...e5
        • 2.Qd6#
      • 1...c3!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Qxe6#
      • 1...Kxe5!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qd6#
      • 1...Kxe6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Qd6#
      • 1...Ke5
        • 2.Qc5#
      • 1...Kc6
        • 2.Qxe6#
      • 1...e5
        • 2.Qd7#

Anticipated by 49326(1893)

This anticipates 147952(1912), 77079(1948)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINP(e),S_FLIGHT::QAR2(E),XP(e)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • P(e);OGATE::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(E),XP(e)
      • Refutation
        • K(d);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,XP(e)
      • Refutation
        • K(d);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(d);P-FLIGHT::QAR2(E)
      • K(d);P-FLIGHT,P_SPINP(e)::QAR2(E)
      • K(d);S_FLIGHT::QAR2(E),XP(e)
      • P(e);SBLOCK::QAR2(E)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).